nick watt, abc news, los angeles. >>> and we thank you for watching. we will, of course, have the very latest on the attack in libya on "nightline" coming up later. we're always here on abcnews.com. we'll see you back here again tomorrow night. good night. again tomorrow night. good n >>> tonight the bay area background of u.s. ambassador to libya being hailed as a hero around the world. >> a final attempt to find sierra lamar, her mother shares emotion was abc 7 news. >> smaller phone, bigger screen. new iphone 5 and some new stuff for those of you who aren't ready to upgrade. >> and amazon tax. your last chance to shop online, and still arc void paying it. >> there is no mistake, we'll work with the libyan government to bring justice to the killer who's tacked our people. >> president obama vowing to avenge the death of a bay area diplomat. >> and there is the 52-year-old serving his third stint in libya. stevens and three other americans killed yesterday, september 11th in what began as a demonstration in the u.s. consulate in liba. white house sour